# The America 250 Time Capsule: How Library Scientists Guided the Longevity Inside

Preservation Research and Testing Division staff worked closely with the U.S. Semiquincentennial Commission, also known as America 250, to help ensure that the national time capsule would not degrade or damage its contents. Staff engaged with National Institute of Standards and Technology (NIST) engineers on time capsule design and construction. Learn about this experience and get a peek inside the capsule.

- Kind: Talk
- Year: 2026
- Runtime: 30 min
- By: Davis, Andrew
- Archive: [Library of Congress](https://www.loc.gov/item/video-12444/)
- Licence or status: Rights statement at the Library of Congress (as the archive states it)
- Credit: Library of Congress
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/loc/video-12444?play=1)